# Invalid Tickers in Diagnostics: How to fix it?

**URL:** <https://forum.numer.ai/t/invalid-tickers-in-diagnostics-how-to-fix-it/3650>\
**Category:** Signals\
**Created:** [June 24, 2021, 2:47pm UTC](https://forum.numer.ai/t/invalid-tickers-in-diagnostics-how-to-fix-it/3650 "2021-06-24T14:47:17Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![mugamma](https://avatars.discourse-cdn.com/v4/letter/m/c57346/32.png) [@mugamma](https://forum.numer.ai/u/mugamma)\
**Post date:** [June 24, 2021, 3:06pm UTC](https://forum.numer.ai/t/invalid-tickers-in-diagnostics-how-to-fix-it/3650/2 "2021-06-24T15:06:27Z")

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What header are you using? I found that switching from `ticker` to `numerai_ticker` did wonders for my match rate.

> [@Tips on mismatched ticker names?](http://forum.numer.ai/t/tips-on-mismatched-ticker-names/3555/2):
>
> Turns out my issue was in the header. I had ticker instead of numerai\_ticker like the example code. Changing to numerai\_ticker gave me 100% live tickers matched. The documentation on this should be clarified. It currently says the following which does not mention a numerai\_ticker option nor explain whatever the semantic difference is. A cusip, sedol, or ticker column - values must be valid tickers associated with the ticker type in the header. [https://docs.numer.ai/numerai-signals/signals-o…](https://docs.numer.ai/numerai-signals/signals-overview#submissions)

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